Improvement in machines for making telegraph-pins



c. o. RIPLEY.

Machinesfor Making lielegrph-Pins. N0. JQS, Patented Feb. 24.1874.

UNTTED STATES PATENT OEEIGE.

CHARLES O. RIPLEY, OF NEWARK, NEW JERSEY.

IMPROVEMENT IN MACHINES FOR MAKING TELEGRAPH-PINS.

Specification forming part of Letters Patent No. 147,793, dated February 24, 1874 application led February 3, 1874.

To all 'whom it may concern Be it known that I, OnAELEs 0. RIPLEY, of the city of Newark, county of Essex and State of New Jersey, have invented a Machine for Making Telegraph-Pins; and I do hereby declare the following to be a full and correct description of the same, reference being' had to the accompanying drawings, in Which- Figure 1 is a top-plan view, and Fig. 2 a vertical cross-section on the line x :c of Fig. l.

The object of my invention is to provide a machine for rapidly cutting telegraph-pins, with both ends tapering, and with the upper end provided with a screw-thread for receiving the glass insulators; and consists in combining, with an ordinary lathe, two adjustable knives, a screw-cutter, and screw feed-guide, constructed and: arranged for operation as hereinafter described.

In the drawings, A and B represent the op- `posite heads of an ordinary lathe, and I a car- ,riage arranged to slide under and between them by means of a lever, D, pivoted at c, and loosely connected to it at c by Va rod, j', as shown in Fig. 1. To the upper side of the carriage I, and at a suitable height, are attached supports d, as shown in Fig. 2, and to these supports two adjustable knives, E and F, as shown in Fig. l.v In the rear of the lathe-heads A and B a shaft, H, is mounted loosely in bearings a and b, and to it are attached a screw-cutter, G, and a screw feed guide, J, as shown in the same ligure. The knife of the' screw-cutter is fastened to the l free end of the same, and so as to come on a mounted loosely in bearings, and operated by a belt, L, from the lathe, as shown in Fig. `l. It is also weighted, so that it will drop out of gear when the free end of the screw-cutter is raised, as shown in Fig. 2.

Having properly set the knives E F, the screw-cutter G, aud feed-guide J, the block C, from which the pin'is to be formed, is inserted between the heads of the lathe in the usual manner, and revolved rapidly. The carriage I is then drawn quickly forward by the lever D, when the knives E F cut the pin in the desired form. This done, the screw-cutter Gr is pressed down upon the upper end of the pin, which causes the guide J to engage at the same time with the vfeed-screw K, and move the shaft H longitudinally, and thus cause the cutter to form the screw on the pin, as shown. As soon as this is done, the cutter is released, and the feedguide at the same time.

vAs 'will be seen, by means of this machine, telegraph-pins of the same size and form, and provided with a screw-thread, are cheaply and rapidly made. t

Having thus despribed my invention, what "I claim is- A telegraph-pin-cutting machine, consisting of an ordinary lathe, in combination with the cutting-knives E F, screw-cutter Gr, feed-guide J, and feed-screw K, constructed and arranged to operate substantially as described.

The above specification of said invention signed and witnessed at Washington, D. C., this 28th day of January, A. D. 1874.

CHARLES O. RIPLEY.

Witnesses:

H. B. MUNN, XV. P. BELL. 

